I'm looking for some information on this model. I'm thinking of purchasing it. Is it wood or alum. construction. Any problems with this model? Roof material? Weight? I have an 04 F-150 Super Cab, 5.4 v-8, 3.73 traction lock rear axle, trailer towing package, B&M extra cap. trans pan., Mag-Hytec rear end cover, K&N filter charger, A&E throttle body plate, gibson cat back exhaust. Will I have any trouble towing this unit. I live in Florida, but I do plan on going to Tenn. Any help would be GREATLY app.